Chris Muller uploaded a new version of Morphic to project The Trunk:
http://source.squeak.org/trunk/Morphic-cmm.615.mcz

==================== Summary ====================

Name: Morphic-cmm.615
Author: cmm
Time: 1 April 2012, 2:58:21.801 pm
UUID: a130266e-74d0-4bd0-920c-cd61b7b39823
Ancestors: Morphic-cmm.614

Revert grab vs. attach until a better solution can be determined.

=============== Diff against Morphic-cmm.614 ===============

Item was changed:
  ----- Method: HaloMorph>>doGrab:with: (in category 'private') -----
  doGrab: evt with: grabHandle
  	"Ask hand to grab my target."
  
  	self obtainHaloForEvent: evt andRemoveAllHandlesBut: grabHandle.
+ 	evt hand grabMorph: target.
- 	evt hand attachMorph: target.
  	self step. "update position if necessary"
  	evt hand addMouseListener: self. "Listen for the drop"!